Fix remaining Acrolinx validation feedback

- Added ms.custom: references_regions to 4 remaining files (understand-baseline-settings-parameter.md, 02-setup-prerequisites.md, 03-network-requirements.md, 04-operations-troubleshooting.md)
- Added introductory paragraph to 02-setup-prerequisites.md between H1 and first H2
- Fixed sequential steps formatting: Changed numbered sub-lists to bullets for non-sequential items in deploy-a-baseline-policy-assignment.md and assign-built-in-policies.md
- Improved document structure and compliance with Azure documentation standards

Author: Mutemwa Masheke

articles/governance/machine-configuration/how-to/assign-built-in-policies.md

@@ -82,7 +82,7 @@ Let’s use one of the built-in Machine Configuration policies—**Audit Windows
 Once assigned, the policy will automatically begin evaluating machines within scope. Compliance results will surface in the **Policy → Compliance** view, where you can drill down to specific resources or export results.
 
 > [!NOTE]
-> The same process applies to other built-in Machine Configuration policies—such as those auditing Linux baselines, password settings, or required applications. Parameters vary by definition and allow you to customize the audit scope without creating new policies.
+> The same process is applicable to other built-in Machine Configuration policies—such as those auditing Linux baselines, password settings, or required applications. Parameters vary by definition and allow you to customize the audit scope without creating new policies.
 
 ## Programmatic Access and Automation
 

articles/governance/machine-configuration/how-to/view-compliance.md

@@ -16,11 +16,11 @@ Use this view to validate which policies are deployed, where they're scoped, and
 
 ### View Assigned Policies
 
-- Navigate to **Azure Policy → Compliance.**
+1. Navigate to **Azure Policy → Compliance.**
 
-- Each entry shows a deployed assignment and its target scope (subscription, management group, or resource group).
+2. View each entry, which shows a deployed assignment and its target scope (subscription, management group, or resource group).
 
-- Use filters such as **Policy definition equals all,** or **Subscription ID equals all** to narrow the list.
+3. If needed, use filters such as **Policy definition equals all,** or **Subscription ID equals all** to narrow the list.
 
 [![Screenshot of Azure Policy Compliance page showing policy assignments with filters and export options.](../media/view-machine-configuration-compliance-reporting/azure-policy-compliance-page-filters-export.png)](../media/view-machine-configuration-compliance-reporting/azure-policy-compliance-page-filters-export.png#lightbox)
 
@@ -55,11 +55,11 @@ Use this view to investigate machine-level compliance for each assigned policy a
 
 ### View All Guest Assignments
 
-- Navigate to **Machine Configuration → Guest Assignments**.
+1. Navigate to **Machine Configuration → Guest Assignments**.
 
-- Each row represents a machine's evaluation against an assigned policy.
+2. View each row represents a machine's evaluation against an assigned policy.
 
-- The **Status** column indicates whether the machine is *Compliant*, *NonCompliant*, or *Pending*.
+3. Observe the **Status** column, which indicates whether the machine is *Compliant*, *NonCompliant*, or *Pending*.
 
 [![Screenshot of Guest Assignments list showing machines with compliance status indicators.](../media/view-machine-configuration-compliance-reporting/guest-assignments-list-compliance-indicators.png)](../media/view-machine-configuration-compliance-reporting/guest-assignments-list-compliance-indicators.png#lightbox)